Bug #11211: defined(foo.bar) calls respond_to_missing? everytime

• Status: Closed
• Assignee: matz (Yukihiro Matsumoto)
• Target version: -
• ruby -v: 2.3dev
• Backport: 2.0.0: WONTFIX, 2.1: DONE, 2.2: DONE

[ko1 (Koichi Sasada)]

class C
  def respond_to_missing? *args
    p args
  end
  def existing_method; end
end

p defined?(C.new.existing_method)

This script prints

[:existing_method, false]
"method"

even though exsiting_method is defiend.

It should be a bug.

[ko1 (Koichi Sasada)]

• Status changed from Open to Closed

Applied in changeset r50737.

---

• vm_insnhelper.c (vm_defined): skip respond_to_missing? when
  a method is available.
  [Bug #11211]
• test/ruby/test_defined.rb: add a test for this fix.

[usa (Usaku NAKAMURA)]

• Backport changed from 2.0.0: UNKNOWN, 2.1: UNKNOWN, 2.2: UNKNOWN to 2.0.0: WONTFIX, 2.1: REQUIRED, 2.2: REQUIRED

[nagachika (Tomoyuki Chikanaga)]

• Backport changed from 2.0.0: WONTFIX, 2.1: REQUIRED, 2.2: REQUIRED to 2.0.0: WONTFIX, 2.1: REQUIRED, 2.2: DONE

Backported into ruby_2_2 branch at r52768.
The patch to vm_insnhelper.c (vm_defined) in r52768 was applied to insns.def (defined) on ruby_2_2.

[usa (Usaku NAKAMURA)]

• Backport changed from 2.0.0: WONTFIX, 2.1: REQUIRED, 2.2: DONE to 2.0.0: WONTFIX, 2.1: DONE, 2.2: DONE

ruby_2_1 r52802 merged revision(s) 50737.